limit sharing ability to certain users

[simeon.ott at onnet.ch]

Hello

Is it possible to limit the ability of sharing it’s own mailboxes to only a few users?
We have a few sensitive mailboxes of users where the ability to share via IMAP SETACL should be prevented.

I tried the following so far…
  doveadm acl remove -u test at onnet.ch <mailto:test at onnet.ch> INBOX user=test at onnet.ch <mailto:user=test at onnet.ch> admin

but when doing this the admin rights are still there
  doveadm acl rights -u test at onnet.ch <mailto:test at onnet.ch> INBOX
  vmail at buserver:~$ doveadm acl rights -u test at onnet.ch <mailto:test at onnet.ch> INBOX
  Rights                                                                                                                
  lookup read write write-seen write-deleted insert post expunge create delete admin

Thanks in advance for your help
Simeon
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